Microcomputer's Terminal Description - Kenwood KRC-665R Service Manual

KRC-665R/591/591V/591Y/591YV
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MICROCOMPUTER'S TERMINAL DESCRIPTION

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IC1(SYNTHESIZE UNIT : X14-68XX-XX)
Pin No. Pin Name
1 TYPE 1
2 TYPE 2
3 IFC
4 AVSS
5 IC2-TYPE 1
PANEL-DET
6
7 AVREF1
8 CH-DATAC
9 CH-DATAH
10 CH-CLK
11 L-DATAL
12 L-DATAS
13 L-CLK
14 L-CE
15 BEEP
16 PLL-DATA
FLIP-DET
17
18 PLL CLK
19 N.C.
20 EJECT ILL/DSI
21 L-RST
PAN 5V
22
TE
L 13942296513
23 R-DATA
24 R-QUAL
25 SUB (-)
26 SUB (+)
27 FWD/rev
28 MS-CONT
metal
29
30 EQ-MUTE
31 DOLBY
music
32
33 VSS1
34 IC2 TYPE 0
35 AM+B
36 FM+B
AFS
37
38 IC2-CLK
39 IC2-DATA
40 EEPROM DET
P-MUTE
41
42 P-STBY
43 MUTE
44 PRE MUTE
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45 DIMMER-CON
BU-DET
46
ACC-DET
47
dimmer
48
49 REMO
50 ANT-CON
4
I/O Description
I Destination type selection port
I Destination type selection port
I F/E IFC OUT input terminal
- A/D,D/A converter ground connection terminal
I Maket/genuine select (Noise cancel)
I Panel detection
I D/A converter reference voltage input terminal
I Data input from changers
O Data output to changers
I/O Clock input/output with changers
I Data input from the LCD driver IC
O Data output to the LCD driver IC
O Clock output to the LCD driver IC
O LCD driver chip enable
O BEEP sound output
I/O Tuner (01ST) data input/output
I Panel detach detection
O Tuner (01ST) clock input/output
O Not used
O EJECT ILL KEY & DSI output
O Reset output to the LCD driver IC
I/O Panel 5V control terminal
I Data input from the RDS decoder IC
I Quality input from the RDS decoder IC
O Sub motor output (-)
O Sub motor output (+)
I Cassette tape running direction detection
O ADV sensitivity control
O NORMAL/METAL change
O EQ-MUTE change
O Dolby ON/OFF
I Casstet music space detection
- GND
I Maket/genuine select 0 (ROLL-OFF)
O AM power supply terminal
O FM power supply terminal
O Noise detection time constant switching terminal
O IC2 clock output
I/O IC2 data input/output
I EEPROM detection terminal
O Power IC mute control output
O Power IC standby control output
O IC2 mute control output
O Pre-out mute control
O Dimmer Control
x ao
I Momentary power down detection input y
I ACC detection input
. i
I Small lights detection input
I Data input from the remote control light sensor
O Antenna control output
8
H: Station exists
Connected to GND lines.
L: Maket
L: Panel exists
Connecting to BU5V
Last maintenace
input
Communication speed 600kHz (max)
Communication speed 1.2MHz (max)
L: Panel detached
L: Panel detachd
H: Driver select
Last maintenace
L: Panel attached
L: Light ON
L: Reset ON H: Reset OFF
L: ON (Panel exists & ACC ON)
H: OFF (Panel does not exists or ACC OFF)
Q Q
3 6 7 1 3
H: FWD
H: PLAY
H: NORMAL L: METAL
H: ON
H: ON
H: Music does not exists
L: Market
H: During AM reception
H: During FM reception if with RDS
Hi: During FM reception, Lo: During FM seek or
AF search
H: EEPROM exist
H: Mute OFF
L: Mute ON, PowerOFF, All OFF, TEL Mute
L: Power IC OFF, All OFF mode
H: Power IC ON
H: Mute ON L: Mute OFF
L: Momentary power down, Reset
Control with pulse output
u163
H :BU OFF
L: ACC ON
.
L: ON
H: TUNER, TI
2 9 9 4 2 8
Processing Operation
Vth: 2.5V
H: genuine
H: Panel does not exists
L: Not select
H: Panel detached
H: Light OFF
1 5 0 5 8 2 9 9 4
L: REV
L: FF/REV
L: OFF
L: OFF
L: Music exist
L: Genuine 0
L: EEPROM does not exists
m
H: Power ON
L: Power OFF
co
L : BU ON
H: ACC OFF
H: OFF
9 9
2 8 9 9